You cannot presume to know what another is thinking.  Even when you live with someone for a long time, there are things that are hidden, and always there is the filter of the life experiences that change the way each human perceives their world.  Yes, “their” world, for the lens of perception colors reality differently.  It is the human way to think you all think alike.  Yes, you feel the same emotions, just as we have recently shared, but you process these differently.  How to deal with others, then?  With compassion.  Listen to them and hear with the heart.  Can you sense the emotion that underlies the words and actions?  Do your best to not relate these to your own experiences.  Just be with them with appreciation and understanding.  This is what helps others to feel valued.  You are here to connect and to learn and grow from these connections.  Listen and feel, and know:  you are so very loved.